When using a torque wrench, load slowly and evenly; do not pull or press abruptly to avoid overloading and inaccurate output torque. Stop loading once the preset torque is reached.

Do not use preset torque wrenches to remove bolts or nuts.

Do not extend the force arm of the torque wrench by attaching a sleeve to the end to prevent damage to the torque wrench.

Adjust the required torque as needed, and ensure the adjustment mechanism is locked before use.

After using the preset torque wrench, it should be adjusted to a low torque to fully relax the force spring, thereby extending its lifespan.

Prevent moisture from penetrating preset torque wrenches to avoid component rusting.

The torque wrench's opening size matches the bolt or nut's dimensions. An oversized opening can lead to slippage and damage to the bolt's hex. In import car repairs, attention should be given to selecting the appropriate English imperial wrench.

Selection Principles for Wrenches: Generally, socket wrenches are preferred first, followed by spanner wrenches, then adjustable wrenches, and finally open-end wrenches.

To prevent the wrench from damaging or slipping, the tension should be applied to the thicker side of the opening. This is especially important for adjustable wrenches subjected to greater force, as it helps prevent the opening from becoming "figure-8" shaped, thereby avoiding damage to the nut and the wrench.